package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.exception.CustomException;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {
    /**
     * app端用户登录
     * @param dto
     * @return
     */
    @Override
    public ResponseResult login(LoginDto dto) {

//        int a = 1/0;
        //1.正常登录  根据手机号和密码进行登录
        if(StringUtils.isNotBlank(dto.getPhone()) && StringUtils.isNotBlank(dto.getPassword())){
            //1.1 获取用户信息   手机号
            ApUser dbUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, dto.getPhone()));
            if(dbUser == null){
//                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户不存在");
                throw  new CustomException(AppHttpCodeEnum.DATA_NOT_EXIST);
            }

            //1.2 比对密码
            String pswd = dto.getPassword();
            String salt = dbUser.getSalt();
            pswd = DigestUtils.md5DigestAsHex((pswd + salt).getBytes());
            if(!pswd.equals(dbUser.getPassword())){
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }
            //1.3 基于用户的id生成token,返回
            Map<String,Object> map = new HashMap<>();
            dbUser.setSalt("");
            dbUser.setPassword("");
            map.put("user",dbUser);
            map.put("token", AppJwtUtil.getToken(dbUser.getId().longValue()));

            return ResponseResult.okResult(map);

        }else {
            //2.游客登录 基于0生成token返回
            Map<String,Object> map = new HashMap<>();

            map.put("token", AppJwtUtil.getToken(0L));

            return ResponseResult.okResult(map);
        }
    }
}
